People saying Pogba isn't worth the price baffles me. Without a strong midfield, it's harder to win games week in and week out, especially if you're playing midweek in a Uefa tournament. Midfielders orchestrate the offense, and control the tempo of a game.
Take a look at Barca, they're a completely different team with Iniesta on the pitch compared to when he's off the pitch. Barca struggle to create chances and pick apart the defense when Iniesta does not play. Back when Xavi played, it just elevated Barca due to having two very commanding and impactful midfielders.
Also, take a look at how Real plays when Modric is on the field and when he's not, same can be said with Kroos for them, they look like a completely different, more lethal team when they're on the pitch.
Take a look at Xabi Alonso leaving Madrid left them, and how much more it elevated Bayern as a team.